Any style, even the BS one can teach a person to fight the random guy on the street, the fake confidence they hae will be enough for them to deliver a good hit to the throat or the groin and bring the guy down

The sad thing is they are wasteing their time training with people who are not so great and are probably not getting the same workout they could be getting somewhere else or learning inferior and not original forms or kata if that is what they are there for, generaly not becomeing the best they can be